Author: Orson Scott Card
There's a reason why every human society has fiction. It teaches us how to be 'good', to behave in a way that is for the benefit of the whole community.
The priests say that God created our souls, and that just puts us under the control of another puppeteer. If God created our will, then he's responsible for every choice we make.
My favourite all-time work of fiction: Lord of the Rings. My favourite all-time nonfiction book: Guns, Germs, and Steel. Ask me again next week, you'll get a different answer.